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" (i) "sin81^(@)+sin71^(@)...

" (i) "sin81^(@)+sin71^(@)

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((sin 33^(@))/( sin 11^(@) sin 49^(@) sin 71^(@)))^(2) + (( cos 33^(@))/(cos 11^(@) cos 49^(@) cos 71^(@)))^(2) is equal to ______.

((sin 33^(@))/( sin 11^(@) sin 49^(@) sin 71^(@)))^(2) + (( cos 33^(@))/(cos 11^(@) cos 49^(@) cos 71^(@)))^(2) is equal to ______.

((sin 33^(@))/( sin 11^(@) sin 49^(@) sin 71^(@)))^(2) + (( cos 33^(@))/(cos 11^(@) cos 49^(@) cos 71^(@)))^(2) is equal to ______.

Evaluate the following: (i) (sin20^@)/(cos70^@) (ii) (cos19^@)/(sin71^@)

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

the value of (cos81^(@))/(sin3^(@)sin57^(@)sin63^(@))=

Evaluate: sin521/2^(@) cos71/2^(@)

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-